Lines Matching full:up
183 struct uart_8250_port *up = up_to_u8250p(port); in __omap8250_set_mctrl() local
184 struct omap8250_priv *priv = up->port.private_data; in __omap8250_set_mctrl()
189 if (!mctrl_gpio_to_gpiod(up->gpios, UART_GPIO_RTS)) { in __omap8250_set_mctrl()
194 lcr = serial_in(up, UART_LCR); in __omap8250_set_mctrl()
195 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in __omap8250_set_mctrl()
200 serial_out(up, UART_EFR, priv->efr); in __omap8250_set_mctrl()
201 serial_out(up, UART_LCR, lcr); in __omap8250_set_mctrl()
228 static void omap_8250_mdr1_errataset(struct uart_8250_port *up, in omap_8250_mdr1_errataset() argument
231 serial_out(up, UART_OMAP_MDR1, priv->mdr1); in omap_8250_mdr1_errataset()
233 serial_out(up, UART_FCR, up->fcr | UART_FCR_CLEAR_XMIT | in omap_8250_mdr1_errataset()
280 static void omap8250_update_scr(struct uart_8250_port *up, in omap8250_update_scr() argument
285 old_scr = serial_in(up, UART_OMAP_SCR); in omap8250_update_scr()
295 serial_out(up, UART_OMAP_SCR, in omap8250_update_scr()
297 serial_out(up, UART_OMAP_SCR, priv->scr); in omap8250_update_scr()
300 static void omap8250_update_mdr1(struct uart_8250_port *up, in omap8250_update_mdr1() argument
304 omap_8250_mdr1_errataset(up, priv); in omap8250_update_mdr1()
306 serial_out(up, UART_OMAP_MDR1, priv->mdr1); in omap8250_update_mdr1()
309 static void omap8250_restore_regs(struct uart_8250_port *up) in omap8250_restore_regs() argument
311 struct omap8250_priv *priv = up->port.private_data; in omap8250_restore_regs()
312 struct uart_8250_dma *dma = up->dma; in omap8250_restore_regs()
313 u8 mcr = serial8250_in_MCR(up); in omap8250_restore_regs()
316 lockdep_assert_held_once(&up->port.lock); in omap8250_restore_regs()
329 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in omap8250_restore_regs()
330 serial_out(up, UART_EFR, UART_EFR_ECB); in omap8250_restore_regs()
332 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); in omap8250_restore_regs()
333 serial8250_out_MCR(up, mcr | UART_MCR_TCRTLR); in omap8250_restore_regs()
334 serial_out(up, UART_FCR, up->fcr); in omap8250_restore_regs()
336 omap8250_update_scr(up, priv); in omap8250_restore_regs()
338 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in omap8250_restore_regs()
340 serial_out(up, UART_TI752_TCR, OMAP_UART_TCR_RESTORE(16) | in omap8250_restore_regs()
342 serial_out(up, UART_TI752_TLR, in omap8250_restore_regs()
346 serial_out(up, UART_LCR, 0); in omap8250_restore_regs()
349 serial8250_out_MCR(up, mcr); in omap8250_restore_regs()
351 serial_out(up, UART_IER, up->ier); in omap8250_restore_regs()
353 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in omap8250_restore_regs()
354 serial_dl_write(up, priv->quot); in omap8250_restore_regs()
356 serial_out(up, UART_EFR, priv->efr); in omap8250_restore_regs()
359 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in omap8250_restore_regs()
360 serial_out(up, UART_XON1, priv->xon); in omap8250_restore_regs()
361 serial_out(up, UART_XOFF1, priv->xoff); in omap8250_restore_regs()
363 serial_out(up, UART_LCR, up->lcr); in omap8250_restore_regs()
365 omap8250_update_mdr1(up, priv); in omap8250_restore_regs()
367 __omap8250_set_mctrl(&up->port, up->port.mctrl); in omap8250_restore_regs()
369 serial_out(up, UART_OMAP_MDR3, priv->mdr3); in omap8250_restore_regs()
371 if (up->port.rs485.flags & SER_RS485_ENABLED && in omap8250_restore_regs()
372 up->port.rs485_config == serial8250_em485_config) in omap8250_restore_regs()
373 serial8250_em485_stop_tx(up); in omap8250_restore_regs()
384 struct uart_8250_port *up = up_to_u8250p(port); in omap_8250_set_termios() local
385 struct omap8250_priv *priv = up->port.private_data; in omap_8250_set_termios()
420 up->port.read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR; in omap_8250_set_termios()
422 up->port.read_status_mask |= UART_LSR_FE | UART_LSR_PE; in omap_8250_set_termios()
424 up->port.read_status_mask |= UART_LSR_BI; in omap_8250_set_termios()
429 up->port.ignore_status_mask = 0; in omap_8250_set_termios()
431 up->port.ignore_status_mask |= UART_LSR_PE | UART_LSR_FE; in omap_8250_set_termios()
433 up->port.ignore_status_mask |= UART_LSR_BI; in omap_8250_set_termios()
439 up->port.ignore_status_mask |= UART_LSR_OE; in omap_8250_set_termios()
446 up->port.ignore_status_mask |= UART_LSR_DR; in omap_8250_set_termios()
451 up->ier &= ~UART_IER_MSI; in omap_8250_set_termios()
452 if (UART_ENABLE_MS(&up->port, termios->c_cflag)) in omap_8250_set_termios()
453 up->ier |= UART_IER_MSI; in omap_8250_set_termios()
455 up->lcr = cval; in omap_8250_set_termios()
456 /* Up to here it was mostly serial8250_do_set_termios() */ in omap_8250_set_termios()
475 up->fcr = UART_FCR_ENABLE_FIFO; in omap_8250_set_termios()
476 up->fcr |= TRIGGER_FCR_MASK(priv->tx_trigger) << OMAP_UART_FCR_TX_TRIG; in omap_8250_set_termios()
477 up->fcr |= TRIGGER_FCR_MASK(priv->rx_trigger) << OMAP_UART_FCR_RX_TRIG; in omap_8250_set_termios()
482 if (up->dma) in omap_8250_set_termios()
490 up->port.status &= ~(UPSTAT_AUTOCTS | UPSTAT_AUTORTS | UPSTAT_AUTOXOFF); in omap_8250_set_termios()
492 if (termios->c_cflag & CRTSCTS && up->port.flags & UPF_HARD_FLOW && in omap_8250_set_termios()
493 !mctrl_gpio_to_gpiod(up->gpios, UART_GPIO_RTS) && in omap_8250_set_termios()
494 !mctrl_gpio_to_gpiod(up->gpios, UART_GPIO_CTS)) { in omap_8250_set_termios()
496 up->port.status |= UPSTAT_AUTOCTS | UPSTAT_AUTORTS; in omap_8250_set_termios()
498 } else if (up->port.flags & UPF_SOFT_FLOW) { in omap_8250_set_termios()
510 up->port.status |= UPSTAT_AUTOXOFF; in omap_8250_set_termios()
514 omap8250_restore_regs(up); in omap_8250_set_termios()
516 uart_port_unlock_irq(&up->port); in omap_8250_set_termios()
535 struct uart_8250_port *up = up_to_u8250p(port); in omap_8250_pm() local
543 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in omap_8250_pm()
544 efr = serial_in(up, UART_EFR); in omap_8250_pm()
545 serial_out(up, UART_EFR, efr | UART_EFR_ECB); in omap_8250_pm()
546 serial_out(up, UART_LCR, 0); in omap_8250_pm()
548 serial_out(up, UART_IER, (state != 0) ? UART_IERX_SLEEP : 0); in omap_8250_pm()
549 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); in omap_8250_pm()
550 serial_out(up, UART_EFR, efr); in omap_8250_pm()
551 serial_out(up, UART_LCR, 0); in omap_8250_pm()
559 static void omap_serial_fill_features_erratas(struct uart_8250_port *up, in omap_serial_fill_features_erratas() argument
590 dev_warn(up->port.dev, in omap_serial_fill_features_erratas()
639 struct uart_8250_port *up = serial8250_get_port(priv->line); in omap8250_irq() local
640 struct uart_port *port = &up->port; in omap8250_irq()
646 /* Shallow idle state wake-up to an IO interrupt? */ in omap8250_irq()
653 if (up->dma) { in omap8250_irq()
677 if ((lsr & UART_LSR_OE) && up->overrun_backoff_time_ms > 0) { in omap8250_irq()
682 up->ier = port->serial_in(port, UART_IER); in omap8250_irq()
683 if (up->ier & (UART_IER_RLSI | UART_IER_RDI)) { in omap8250_irq()
689 cancel_delayed_work(&up->overrun_backoff); in omap8250_irq()
693 delay = msecs_to_jiffies(up->overrun_backoff_time_ms); in omap8250_irq()
694 schedule_delayed_work(&up->overrun_backoff, delay); in omap8250_irq()
705 struct uart_8250_port *up = up_to_u8250p(port); in omap_8250_startup() local
718 serial_out(up, UART_FCR, UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT); in omap_8250_startup()
720 serial_out(up, UART_LCR, UART_LCR_WLEN8); in omap_8250_startup()
722 up->lsr_saved_flags = 0; in omap_8250_startup()
723 up->msr_saved_flags = 0; in omap_8250_startup()
727 up->dma = &priv->omap8250_dma; in omap_8250_startup()
728 ret = serial8250_request_dma(up); in omap_8250_startup()
732 up->dma = NULL; in omap_8250_startup()
735 up->dma = NULL; in omap_8250_startup()
740 up->ier = UART_IER_RLSI | UART_IER_RDI; in omap_8250_startup()
741 serial_out(up, UART_IER, up->ier); in omap_8250_startup()
745 up->capabilities |= UART_CAP_RPM; in omap_8250_startup()
748 /* Enable module level wake up */ in omap_8250_startup()
752 serial_out(up, UART_OMAP_WER, priv->wer); in omap_8250_startup()
754 if (up->dma && !(priv->habit & UART_HAS_EFR2)) { in omap_8250_startup()
756 up->dma->rx_dma(up); in omap_8250_startup()
760 enable_irq(up->port.irq); in omap_8250_startup()
769 struct uart_8250_port *up = up_to_u8250p(port); in omap_8250_shutdown() local
773 if (up->dma) in omap_8250_shutdown()
774 omap_8250_rx_dma_flush(up); in omap_8250_shutdown()
778 serial_out(up, UART_OMAP_WER, 0); in omap_8250_shutdown()
780 serial_out(up, UART_OMAP_EFR2, 0x0); in omap_8250_shutdown()
784 up->ier = 0; in omap_8250_shutdown()
785 serial_out(up, UART_IER, 0); in omap_8250_shutdown()
787 disable_irq_nosync(up->port.irq); in omap_8250_shutdown()
790 serial8250_release_dma(up); in omap_8250_shutdown()
791 up->dma = NULL; in omap_8250_shutdown()
796 if (up->lcr & UART_LCR_SBC) in omap_8250_shutdown()
797 serial_out(up, UART_LCR, up->lcr & ~UART_LCR_SBC); in omap_8250_shutdown()
798 serial_out(up, UART_FCR, UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT); in omap_8250_shutdown()
823 struct uart_8250_port *up = up_to_u8250p(port); in omap_8250_unthrottle() local
831 if (up->dma) in omap_8250_unthrottle()
832 up->dma->rx_dma(up); in omap_8250_unthrottle()
833 up->ier |= UART_IER_RLSI | UART_IER_RDI; in omap_8250_unthrottle()
835 serial_out(up, UART_IER, up->ier); in omap_8250_unthrottle()
847 struct uart_8250_port *up = up_to_u8250p(port); in omap8250_rs485_config() local
878 mctrl_gpio_to_gpiod(up->gpios, UART_GPIO_RTS) || in omap8250_rs485_config()
882 serial_out(up, UART_OMAP_MDR3, priv->mdr3); in omap8250_rs485_config()
905 serial_out(up, UART_OMAP_MDR3, priv->mdr3); in omap8250_rs485_config()
1226 static bool handle_rx_dma(struct uart_8250_port *up, unsigned int iir) in handle_rx_dma() argument
1232 omap_8250_rx_dma_flush(up); in handle_rx_dma()
1235 return omap_8250_rx_dma(up); in handle_rx_dma()
1238 static u16 omap_8250_handle_rx_dma(struct uart_8250_port *up, u8 iir, u16 status) in omap_8250_handle_rx_dma() argument
1242 if (handle_rx_dma(up, iir)) { in omap_8250_handle_rx_dma()
1243 status = serial8250_rx_chars(up, status); in omap_8250_handle_rx_dma()
1244 omap_8250_rx_dma(up); in omap_8250_handle_rx_dma()
1251 static void am654_8250_handle_rx_dma(struct uart_8250_port *up, u8 iir, in am654_8250_handle_rx_dma() argument
1255 lockdep_assert_held_once(&up->port.lock); in am654_8250_handle_rx_dma()
1261 (up->ier & UART_IER_RDI)) { in am654_8250_handle_rx_dma()
1262 omap_8250_rx_dma(up); in am654_8250_handle_rx_dma()
1263 serial_out(up, UART_OMAP_EFR2, UART_OMAP_EFR2_TIMEOUT_BEHAVE); in am654_8250_handle_rx_dma()
1270 up->ier &= ~(UART_IER_RLSI | UART_IER_RDI); in am654_8250_handle_rx_dma()
1271 serial_out(up, UART_IER, up->ier); in am654_8250_handle_rx_dma()
1272 omap_8250_rx_dma_flush(up); in am654_8250_handle_rx_dma()
1273 serial_in(up, UART_IIR); in am654_8250_handle_rx_dma()
1274 serial_out(up, UART_OMAP_EFR2, 0x0); in am654_8250_handle_rx_dma()
1275 up->ier |= UART_IER_RLSI | UART_IER_RDI; in am654_8250_handle_rx_dma()
1276 serial_out(up, UART_IER, up->ier); in am654_8250_handle_rx_dma()
1287 struct uart_8250_port *up = up_to_u8250p(port); in omap_8250_dma_handle_irq() local
1288 struct omap8250_priv *priv = up->port.private_data; in omap_8250_dma_handle_irq()
1303 am654_8250_handle_rx_dma(up, iir, status); in omap_8250_dma_handle_irq()
1305 status = omap_8250_handle_rx_dma(up, iir, status); in omap_8250_dma_handle_irq()
1308 serial8250_modem_status(up); in omap_8250_dma_handle_irq()
1309 if (status & UART_LSR_THRE && up->dma->tx_err) { in omap_8250_dma_handle_irq()
1310 if (uart_tx_stopped(&up->port) || in omap_8250_dma_handle_irq()
1311 uart_circ_empty(&up->port.state->xmit)) { in omap_8250_dma_handle_irq()
1312 up->dma->tx_err = 0; in omap_8250_dma_handle_irq()
1313 serial8250_tx_chars(up); in omap_8250_dma_handle_irq()
1319 if (omap_8250_tx_dma(up)) in omap_8250_dma_handle_irq()
1320 serial8250_tx_chars(up); in omap_8250_dma_handle_irq()
1394 struct uart_8250_port up; in omap8250_probe() local
1418 memset(&up, 0, sizeof(up)); in omap8250_probe()
1419 up.port.dev = &pdev->dev; in omap8250_probe()
1420 up.port.mapbase = regs->start; in omap8250_probe()
1421 up.port.membase = membase; in omap8250_probe()
1422 up.port.irq = irq; in omap8250_probe()
1431 up.port.type = PORT_8250; in omap8250_probe()
1432 up.port.iotype = UPIO_MEM; in omap8250_probe()
1433 up.port.flags = UPF_FIXED_PORT | UPF_FIXED_TYPE | UPF_SOFT_FLOW | in omap8250_probe()
1435 up.port.private_data = priv; in omap8250_probe()
1437 up.port.regshift = OMAP_UART_REGSHIFT; in omap8250_probe()
1438 up.port.fifosize = 64; in omap8250_probe()
1439 up.tx_loadsz = 64; in omap8250_probe()
1440 up.capabilities = UART_CAP_FIFO; in omap8250_probe()
1448 up.capabilities |= UART_CAP_RPM; in omap8250_probe()
1450 up.port.set_termios = omap_8250_set_termios; in omap8250_probe()
1451 up.port.set_mctrl = omap8250_set_mctrl; in omap8250_probe()
1452 up.port.pm = omap_8250_pm; in omap8250_probe()
1453 up.port.startup = omap_8250_startup; in omap8250_probe()
1454 up.port.shutdown = omap_8250_shutdown; in omap8250_probe()
1455 up.port.throttle = omap_8250_throttle; in omap8250_probe()
1456 up.port.unthrottle = omap_8250_unthrottle; in omap8250_probe()
1457 up.port.rs485_config = omap8250_rs485_config; in omap8250_probe()
1459 up.port.rs485_supported = serial8250_em485_supported; in omap8250_probe()
1460 up.rs485_start_tx = serial8250_em485_start_tx; in omap8250_probe()
1461 up.rs485_stop_tx = serial8250_em485_stop_tx; in omap8250_probe()
1462 up.port.has_sysrq = IS_ENABLED(CONFIG_SERIAL_8250_CONSOLE); in omap8250_probe()
1469 up.port.line = ret; in omap8250_probe()
1471 if (of_property_read_u32(np, "clock-frequency", &up.port.uartclk)) { in omap8250_probe()
1479 up.port.uartclk = clk_get_rate(clk); in omap8250_probe()
1484 &up.overrun_backoff_time_ms) != 0) in omap8250_probe()
1485 up.overrun_backoff_time_ms = 0; in omap8250_probe()
1491 if (!up.port.uartclk) { in omap8250_probe()
1492 up.port.uartclk = DEFAULT_CLK_SPEED; in omap8250_probe()
1516 * prevent an unsafe default policy with lossy characters on wake-up. in omap8250_probe()
1525 omap_serial_fill_features_erratas(&up, priv); in omap8250_probe()
1526 up.port.handle_irq = omap8250_no_handle_irq; in omap8250_probe()
1571 ret = serial8250_register_8250_port(&up); in omap8250_probe()
1592 struct uart_8250_port *up; in omap8250_remove() local
1599 up = serial8250_get_port(priv->line); in omap8250_remove()
1600 omap_8250_shutdown(&up->port); in omap8250_remove()
1633 struct uart_8250_port *up = serial8250_get_port(priv->line); in omap8250_suspend() local
1644 serial_out(up, UART_OMAP_WER, priv->wer); in omap8250_suspend()
1645 if (uart_console(&up->port)) { in omap8250_suspend()
1666 struct uart_8250_port *up = serial8250_get_port(priv->line); in omap8250_resume() local
1670 if (uart_console(&up->port) && console_suspend_enabled) { in omap8250_resume()
1687 static int omap8250_lost_context(struct uart_8250_port *up) in omap8250_lost_context() argument
1691 val = serial_in(up, UART_OMAP_SCR); in omap8250_lost_context()
1751 struct uart_8250_port *up = NULL; in omap8250_runtime_suspend() local
1754 up = serial8250_get_port(priv->line); in omap8250_runtime_suspend()
1763 if (up) { in omap8250_runtime_suspend()
1765 omap8250_update_mdr1(up, priv); in omap8250_runtime_suspend()
1767 serial_out(up, UART_OMAP_WER, priv->wer); in omap8250_runtime_suspend()
1771 if (up && up->dma && up->dma->rxchan) in omap8250_runtime_suspend()
1772 omap_8250_rx_dma_flush(up); in omap8250_runtime_suspend()
1784 struct uart_8250_port *up = NULL; in omap8250_runtime_resume() local
1791 up = serial8250_get_port(priv->line); in omap8250_runtime_resume()
1793 if (up && omap8250_lost_context(up)) { in omap8250_runtime_resume()
1794 uart_port_lock_irq(&up->port); in omap8250_runtime_resume()
1795 omap8250_restore_regs(up); in omap8250_runtime_resume()
1796 uart_port_unlock_irq(&up->port); in omap8250_runtime_resume()
1799 if (up && up->dma && up->dma->rxchan && !(priv->habit & UART_HAS_EFR2)) { in omap8250_runtime_resume()
1800 uart_port_lock_irq(&up->port); in omap8250_runtime_resume()
1801 omap_8250_rx_dma(up); in omap8250_runtime_resume()
1802 uart_port_unlock_irq(&up->port); in omap8250_runtime_resume()